Forum Discussion
Advocate IIIM formula explanation - Table.SelectRows
It's not a function name, it's an input parameter of the function, you may refer to tutorials belew about custom function in power query.
http://radacad.com/writing-custom-functions-in-power-query-m
https://blogs.msdn.microsoft.com/mvpawardprogram/2013/08/19/creating-power-query-functions/
Community Support Team _ Jimmy Tao
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Community Support
Based on my understanding, this is because you use a Table.Buffer function before the add columns step. Table.Buffer will buffer a table into memory, isolating it from external changes during evaluation which means it's a temparary table and you can call it multiple times with out load table into memery again. It's very similar to a function parameter which is also not in disk memory.
So this question can be converted to "When and where should we use a buffer in power query", you may refer to similar cases below:
Community Support Team _ Jimmy Tao
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jdusek92v-yuta-msft thank you very much for your answer.
I am getting the idea of buffered tables. In my example the buffered table is called zmenyBuf.
But I am still not sure about this syntax:
(tempNazev) => Table.SelectRows(zmenyBuf,each tempNazev [m]>= [od] and tempNazev [m]<= [do] and tempNazev [ID]=[ID]), Value.Type(zmenyBuf)
what is the function name of (tempNazev) => ?
Could you provide any links with more information about this syntax?
Warm regards
- v-yuta-msft
It's not a function name, it's an input parameter of the function, you may refer to tutorials belew about custom function in power query.
http://radacad.com/writing-custom-functions-in-power-query-m
https://blogs.msdn.microsoft.com/mvpawardprogram/2013/08/19/creating-power-query-functions/
Community Support Team _ Jimmy Tao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.